312221012103 has 192 divisors, whose sum is σ = 633339786240. Its totient is φ = 147900867840.

The previous prime is 312221012101. The next prime is 312221012149. The reversal of 312221012103 is 301210122213.

It is not a de Polignac number, because 312221012103 - 2¹ = 312221012101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312221012101) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 24669325 + ... + 24681977.

It is an arithmetic number, because the mean of its divisors is an integer number (3298644720).

Almost surely, 2^312221012103 is an apocalyptic number.

312221012103 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

312221012103 is an abundant number, since it is smaller than the sum of its proper divisors (321118774137).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312221012103 is a wasteful number, since it uses less digits than its factorization.

312221012103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12787 (or 12770 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 312221012103 its reverse (301210122213), we get a palindrome (613431134316).

It can be divided in two parts, 3122210 and 12103, that added together give a palindrome (3134313).

The spelling of 312221012103 in words is "three hundred twelve billion, two hundred twenty-one million, twelve thousand, one hundred three".